基于热干化处理的纺织印染污泥中重金属迁移转化特性及其机理研究

项目名称： 基于热干化处理的纺织印染污泥中重金属迁移转化特性及其机理研究

项目编号： No.51208393

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 李进平

作者单位： 武汉纺织大学

项目金额： 25万元

中文摘要： 本课题首次提出以纺织印染污泥为研究对象，采用外源热力强化热干化处理技术和BCR提取技术为主的研究手段和方法，研究纺织印染污泥中重金属在不同温度-pH动态作用过程中其热迁移转化规律。通过化学分析、结构形貌测试及动态模拟等分析方法和实验手段，研究纺织印染污泥理化特性和热干化前后重金属形态转化特征，重点研究基于不同温度-pH动态作用过程中污泥中重金属迁移转化的影响因子并做对比分析，阐明纺织印染污泥热干化过程中重金属稳定性改变之原因。通过构建纺织印染污泥热干化过程中重金属迁移转化特性和热干化影响因子之间的内在联系，揭示印染污泥热干化过程中重金属迁移转化的作用机制和规律。本研究为研究纺织印染污泥中重金属的存在形态提供了新的研究思路和技术方法，为纺织印染污泥减量化、无害化、资源化利用过程中重金属的迁移控制提供了新的技术方法和理论支撑。

中文关键词： 污泥；热干化；重金属；形态分布；迁移转化

英文摘要： This subject firstly proposed textile dyeing sludge as object of this study, using the technology of external heat strengthening the thermal drying process and BCR extraction technology which are the main methods to study the mechanism of thermal mobility and transformation of heavy metals when they were put in the dynamic role of the different temperature-pH process. During the sludge thermal drying process, we study the physical and chemical properties of the sludge and morphological transformation characteristics of heavy metal pollutants before and after thermal drying by measures of chemical analysis, structure and morphology testing and dynamic simulation analysis. The key of the research is the impact factors which were based on the mobility and transformation of heavy metals in sludge when they were put in the dynamic role of the different temperature-pH process and do a comparative analysis. To elucidate the cause of the change of heavy metals stability in the textile dyeing sludge thermal drying process and reveal the mechanisms of the thermal mobility and transformation of heavy metals by creating the intrinsic link between the impact factor of the mobility and transformation characteristics of heavy metal pollutants and thermal drying. This study provides new research ideas and technical methods to s

英文关键词： sludge；Thermal drying；Heavy metal；Species distribution；Mobility &Transformation